Stable AI and Tsinghua Release LimiX-2 Structured-Data Foundation Model

Stable AI and Professor Peng Cui's group at Tsinghua University released LimiX-2, an open 400-million-parameter foundation model for structured and tabular data. Weights and inference code are published on Hugging Face, with a technical report on arXiv. One checkpoint performs classification, regression and missing-value imputation in a single pass without fine-tuning.

• 400M parameters, open weights on Hugging Face (stable-ai/LimiX-2)
• Classification, regression and imputation in one pass
• Reported first place: Elo 1935 on TabArena, 1432 on BCCO, 1506 on TALENT
• CMN architecture with context-conditioned masked modeling